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Under development
This document is under development and its contents are subject to change.
M16C/6N Group (M16C/6NK, M16C/6NM)
Count source
Input signal to
TAiIN pin
PWM pulse output
from TAiOUT pin
IR bit in TAiIC
register
i = 0 to 4
fj: Frequency of count source (f1, f2, f8, f32, fC32)
NOTES:
1. n = 0000h to FFFEh.
2. This timing diagram is the following case.
TAi register = 0003h
The TAiTGH and TAiTGL bits in the ONSF or TRGSR register = 00b (TAiIN pin input)
The MR1 bit in the TAiMR register = 1 (rising edge)
The MR2 bit in the TAiMR register = 1 (trigger selected by the TAiTGH and TAiTGL bits)
Figure 13.13 Example of 16-bit Pulse Width Modulator Operation
Count source
Input signal to
TAiIN pin
Underflow signal of
8-bit prescaler
PWM pulse output
from TAiOUT pin
IR bit in TAiIC
register
i = 0 to 4
fj: Frequency of count source (f1, f2, f8, f32, fC32)
NOTES:
1. The 8-bit prescaler counts the count source.
2. The 8-bit pulse width modulator counts the output from the 8-bit prescaler underflow signal.
3. m = 00h to FFh; n = 00h to FEh.
4. This timing diagram is the following case.
TAi register = 0202h
The TAiTGH and TAiTGL bits in the ONSF or TRGSR register = 00b (TAiIN pin input)
The MR1 bit in the TAiMR register = 0 (falling edge)
The MR2 bit in the TAiMR register = 1 (trigger selected by the TAiTGH and TAiTGL bits)
Figure 13.14 Example of 8-bit Pulse Width Modulator Operation
Rev.2.00
Nov 28, 2005
REJ09B0124-0200
"H"
"L"
"H"
"L"
"1"
"0"
Set to "0" upon accepting an interrupt request or by writing in program
(1)
"H"
"L"
"H"
(2)
"L"
"H"
"L"
"1"
"0"
Set to "0" upon accepting an interrupt request or by writing in program
page 129 of 378
16
✕
1 / fi
(2
— 1)
Trigger is not generated by this signal
✕
1 / fj
n
1 / fj ✕ (m + 1) ✕ (2 — 1)
8
1 / fj ✕ (m + 1)
1 / fj ✕ (m + 1) ✕ n
13. Timers
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